I am about to start playing a steampunk RPG game called The Iron Realm, which uses a fictional world map. I have recently started using QGIS v1.7 and have no real experience with GIS sysstems. I have imported the map as a raster layer into a new QGIS project and have created some vector layers from it, including a polygon layer for the regions, a point layer for the towns, and a line layer for some added railway tracks and roads.
The game master has just added a scale and some lat/long information to the game map. I assume from this that I can now add a CRS to my QGIS project. I have no idea how to do this and would really appreciate some help, so that I can use my QGIS project with the game effectively. I assume that I will need to create a custom CRS, but I am completely ignorant about how to do this. I think it has something to do with proj.4 but I have no idea how to use it.
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